Inelastic X-ray scattering study of Sr2RuO4

Sr2RuO4 exhibits a still mysterious superconducting state and unusual metallic properties with a cross-over from a Fermi liquid like metallic state to a so-called strange metal state that harbors a linear in T resistivity similarly to the cuprate superconductors. Experimental results on the charge susceptibility a crucial for deciphering the various physical effects at the origin. Currently available EELS data covers only the low q regime and there are conflicting interpretations. Some RIXS results have been published as well, but RIXS is not a direct probe of the charge susceptibility. This proposal aims to cover the intermediate to high q regimes of the charge response in Sr2RuO4. The results will reveal the role of local field effects on the collective and single particle like charge excitations in Sr2RuO4.